- Crowfoot Formation
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Crowfoot Formation
Stratigraphic range: FrasnianType Geological formation Underlies Stettler Formation Overlies Southesk Formation Thickness up to 38 metres (120 ft)[1] Lithology Primary Anhydrite, dolomite Other Shale Location Named for Crowfoot Creek Named by H.R. Belyea and D.J. McLaren, 1957 Coordinates 50°44′53″N 112°35′13″W / 50.748°N 112.587°WCoordinates: 50°44′53″N 112°35′13″W / 50.748°N 112.587°W Region WCSB Country Canada
The Crowfoot Formation is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.
It takes the name from Crowfoot Creek, a tributary of the Bow River and was first described in the Royalite Crowfoot No. 2 well, located near the creek by H.R. Belyea and D.J. McLaren in 1957. [2]
Contents
Lithology
The Crowfoot Formation consists of anhydrite, silty dolomite, with minor shale. [1]
Distribution
The Crowfoot Formation is typically 4 metres (10 ft) thick, but can reach up to 38 metres (120 ft).[1]
Relationship to other units
The Crowfoot Formation is overlain by the Stettler Formation and overlays the Southesk Formation.[1]
It is equivalent to the Calmar Formation and part of the Graminia Formation in central Alberta and to the Torquay Formation in Saskatchewan, Manitoba and Montana.
References
- ^ a b c d Lexicon of Canadian Geologic Units. "Crowfoot Formation". http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:003592. Retrieved 2010-01-01.
- ^ Belyea, H.R. and McLaren, D.J., 1957. Upper Devonian nomenclature in southern Alberta. Journal of the Alberta Society of Petroleum Geologists, v. S. p.166-182.
Western Canadian Sedimentary Basin Hydrocarbon history Depositional Regions Southern Alberta · Central Alberta · Northwestern Alberta Plains · South-central Canadian Rockies foothills · North-east Plains · North-central foothills · Liard River · Fort Nelson · Northern Rocky Mountains · Fort St. John · Saskatchewan · Western ManitobaSouthern Alberta Plains Cypress Hills FM · Porcupine Hills FM · Ravenscrag FM · Edmonton GRP · Belly River GRP · Oldman FM · Foremost FM · Pakowki FM · Milk River FM · Colorado GRP · Mannville GRP · Ellis GRP (Swift FM · Rierdon FM · Sawtooth FM) · Rundle GRP · Banff FM · Exshaw FM · Bakken FM · Wabamun FM · Crowfoot FM · Nisku FM · Ireton FM · Leduc FM · Cooking Lake FM · Beaverhill Lake GRP · Elk Point GRP · Canadian ShieldCategories:- Stratigraphy of Alberta
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